Thank you Mr Technic, I have just done that right now, I did wonder which setting it was meant to be on. Thanks for your help.

Whilst I think of it, what connectors do you use to plug into the sub woofers? I'm jumping the plugs that normally fit into the subs and want to un independent cable to them, just wondered which connectors i should buy. I tried to get it from BMW but they said it only comes as part of the loom.

I see you include some in your harness, if you could point me in the direction of a description ill try and find a supplier (prob maplin in the UK) which would make my life sooo much easier.